* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html,body{
    font-family: "微软雅黑" ;
    font-size: 16px;
    font-weight: 400;
}

a {
    text-decoration: none;
}

li {
    list-style: none;
}

.clearfix:before, .clearfix:after {
    display: table;
    content: '';
    clear: both;
}

.f-fl {
    float: left;
}

.f-fr {
    float: right;
}

.f-tac {
    text-align: center;
}

.f-tal {
    text-align: left;
}

.f-fwb {
    font-weight: bold;
}

.f-fs16 {
    font-size: 16px;
}

.f-fs18 {
    font-size: 18px;
}

.f-fs20 {
    font-size: 20px;
}

.container {
    width: 1200px;
    margin: 0 auto;
}